HI 1771-WS Weigh Scale Module

C2® Electronic Calibration Hardy Instruments' C2® core feature provides quick and easy electronic calibration of a weighing system without the need for heavy test weights. Read more about C2® Electronic Calibration WAVERSAVER® Hardy Instruments' WAVERSAVER core technology eliminates the effects that surrounding vibration has on the scale weight signal, providing only true data for fast, accurate weight reading. Read more about WAVERSAVER®

The only weigh scale module specifically designed to work directly with Allen-Bradley Series 5 PLCs

Hardy Instruments' HI 1771-WS Weigh Scale Module, Series B reads weight data from strain gauge load sensors or load cells. It then conditions and digitizes this data 20 times per second with over one million counts of resolution over a differential signal range of 0 - 30mV. Next it transmits (block-transfers) the selectable Net, Gross, Tare and Rate-Of-Change data and status values over the back plane to the processor. This module can be used in Allen-Bradley's 1771-A1B, A2B, A3B, A3B1, A4B, -AM1, and -AM2 chassis.

Communication between the module and the processor is bi-directional, using both block transfer reads (BTRs) and block transfer writes (BTWs). The module uses a byte in the output image table and a byte in the input image table. The module also requires an area in the data table to store the block-transfer read and write data.

Two independent firmware set points with separate preact and deadband are included to provide control capability. The module has two bi-color LEDs on the front to report its functional characteristics and an internal diagnostics switch to test if its input section is operating correctly.

A software file is included which links the HI 1771WS with Rockwell Software’s RSLogix™ 5.0 Version 4.0 providing graphic interface screens for on-line-configuration from a PC. The HI 1771-WS is used in applications such as batching, blending, filling, dispensing, flow rate monitoring and check weighing.